Power converting device



June 16 1931 E. E. ANTHONY 1,809,884

POWER CONVERTING DEVICE L Filed Feb. 20. 1929.

Patented June 16, ,l93l r ELLIoTinnAnTHoxY, QEJCHICAGOQILLINOIS?1, V

I if DEvidE This invention relates te powei" Converting devices andithas forits rinci al object to produce-an attaehmenh tool or deviee fei' application t'o'a rotary power device so as t utilize the same for aetuziting reeipreeatoryimplements in drilling," riveting, c'hiseliiig, chipping, stampiiigand the likes. i

In certain iiidustries rotary d'r devices ortools" of the yrota'rytype are more extensively used, butht'times 'it is desirable or necessary to employ devices Ofthe recipi'o; eatery; type, for, which 'flattei" clevieesjof course, complete extie equipmeht must o tdi n'afily be provided.- A further object- "ofthe l inveht'iomtherefore; isto' obviate the necessity forsuch full extra equipment and were;

In the aceompanying dizilwings illiistfatihg 2t praeticaladaptitjon of the"inventibii-, Fig.1isa sideelevetioh Ofthe devicewith an" ordinary recipi6eetiii'g 'thefet'og i Fig, 2 is a longitiitlinalSeotioiY of the "de? v'iceonan'enla'rged' scale";-= 5

Fig, gas a fragmentary lhngiti dirial seei tion on the line 3 of Fig.1;-

Fig.4 is a crosssectionrontthej line Fig.2; Fig. 5 is a sectienfon the 1ine5 5 of F igQQ; Fig.6is'a'secti0i1 on the line 6+6 OfFigkQ;

Fig. 7

is a fragmentary View, in side elevzi tio'nof'the end portion of t'hereciprocating s inner tube whichc afries the hammer element of the device, to illiistfatethe afra i'g'mentfo f theactiiii'tihgcaihthefeof., i i

meral -10' desigiiates'the t bular 'mairi 'b'ody POItlOlfOf the device; Fittecl le'osely withiii one end portion of the thb'ulir casing "10, is

llls en d other Referriiig now to the drawings; the iiiu drawing fajii' ordinary feeipreeatiiig drill bit," bii1t-,f0'bVi0usly,5 may he a. tool ;or member Ofbthef character; such as a chisel, stamping tool',i riveting el'e riei t; oi 'the like. l

"s The member 11 has a r'estrietedildiigfithtliangl fitted snuglyegeinst the inherlfaeef'of the tiibulsif easing 1 0'.' Thisflelemeilt 17. is fiil the t' pioyifled with a'vb'o e l9preferebly stimewhaltlttiger. infdizimeter than the remiddle portieri of the to'ol holdefp binv l '11; and oiie side of; said 'elerrintl"? is bldckifi whic h is see ired by the serew'22t0 the rediicecl middle portibnf o'f' said ember 11, said-*h'leck being 17. "Byjthe"pi'ovisicin f the elemeiit 17,

whiehEla'ttef isj dfia lengitildinal dimension Y s eijn'sideiehly' less thaif thedistance between 661 fielder 5 or eiiviljllg' ans we hilqck 21 being; arro er than the slot 20 inf said eleslotted" as at 20te' ac'comnioclate 1 a segmehtl I v V p. 1 censidei ably iar'rowei thenthe wldth 6f the slot 20in the elemeht mem fitm*membeiv r isrmined-within e; tubu ar iligglobi i 'fpe fi i tr s slidebljilbhgitudihally withinthetiihule'p' e sing 1011s an iiiiiei. tube 23; in 'onejend of which; edj ac eiitv to L the zat eol holder or anvil 11, is a hammer element 24;, The haminer e men 2 4 en ra ly cyli d ical -i andfitted-tightly within the. tube; 2?; and; secured in place. by transverse pinj 25,- said member" 24; preferably: having an enlarged 'head portien 26 gtfiordihg ama'miular shoul; der 27: for engagiiig thezenchofthe tube 23;

in} the outerf'tube 10; a -longitiidinal slbt 2811s provided in said inner tube, with which slot a screw-stud 29 on the tube 10 cooperates.

In the end portion of the inner tube 23 opposite to that in which the hammer element 24 is secured, is provided a mutilated screw thread or spiral cam track 30 with which cooperates a corresponding mutilated screw thread or spiral cam portion 31 on the enlarged portion or head 32 of a s indle 33, which latter is insertable in the c uck of a rotary drill or the like, or it may be connected in anyobvious manner with any rotatable power element.

The spindle portion 33 is rotatably mounted in a head 34 preferably detachably secured within adjacent end portion of the outer tube 10 as by the screws 35. In order to afiord suflicient bearing for said spindle in said head'34, the latter is provided with a central extension 36 with the outer end of which cooperates a thrust collar 37 secured by the said screw, 38 to the spindle. Opposed to the thrust collar 37 is the shoulder aflforded by the enlargement 32 of the spindle which abuts a boss 39 on the inner end of the head 34. By this arrangement the spiral cam or screw thread 31 rotates in fixed longitudinal relation to the tubular casing 10 and in cooperative relation to thecam or screw thread 30 on the inner tube 23, and, obviously, said sleeve 23 is caused to move towards the head 34. Within the inner tube 23 and interposed between the inner ends'of the hammer element 24 and the enlarged portion or head 32 of said spindle 33 is a coil spring 40, said spring being under compression and tending to move said inner tube towards the end of the outer tube 10 in which the tool holder or anvil 11'is mounted. Normally, the spring 40 yieldably, holds the hammer element 24 in contact with the tool holder or anvil 11, as shown in Figs. 2 and 3 of the drawings, and to permit the spindle 33 to rotate freely without interference to itself or to the action of the spring 40, the latter has its end portion 41 turned inward and extended axially so as to seat in an axial cavity 42 in the inner end of the enlargement 32 of said spindle 33.

In the operation of the device, the spindle 33 rotating in one direction, right-handed according to the arrangement of the cooperating spiral cams or mutilated screws 30 and 31, as shown, the inner tube 23 istintermit tently moved towards the head 34 and at a speed corresponding, of course, to that at which the spindle rotates. At the instant the mutilated portions of the two spiral cams or screws 30 and 31 meet or register, the spring 40 which has been placed under compression in excess of that under which it is normally set reacts to snap or suddenly move said inner tube 23 in the reverse direction and thereby drives the hammer element 24 in forcible contact with the tool holder or anvil 11,

which latter has been depressed by the operator against the normal tension of the spring 40 and within the limits of the play afforded by the clearance between the stop element 17 and the end collars 15 and 16 of said tool holder or anvil 11.

In order to permit freedom of movement to the unitary reciprocating piston of the device, including the inner tube 23 and the hammer element 24, the latter, which would otherwise completely close the end of the tube 23, is provided with a longitudinal passageway 7 43 or a plurality thereof, as may be desired.

Asshown in the drawings, a single passageway 43 isbored axially through the hammer element 24, but, obviously, in cases where a plurality of said passageways are provided they may be either bored through the body at points between the center and periphery thereof, or said hammer element may be provided with longitudinal peripheral grooves. The opposite end of the tube 23 is vented by providing considerable clearance in the opening 44 in which the head or enlargement 32 of the spindle 33 works. This venting of the reciprocatory piston overcomes the resistance of air compression and evacuation at the opposite ends thereof and permits it to slide freely and rapidly, which is essential to the proper actuation of a device of this character. p,

Obviously, the device may be considerably modified and applied to many difierent uses without in the least departing from the spirit and scope of the invention as defined by the appended claims. The invention, therefore, is not limited to the specific construction and arrangement shown 7 in the accompanying drawings.

What I claim as new and desire to secure by LettersPatent is: 1

1. In a device of the character described, a tubular body casing, an element constituting an anvil and tool holder supported in the end portion of said tubular casing and having limited endwise movement, a spring-pressed impact element mounted to reciprocate longitudinally in said tubular casing and normally in contact with said anvil and tool holder element, and an axially rotatable power ele ment in said tubular casing, said power element having a spiral cam and said impact element having a cooperating portion for engagement with said cam whereby said impact element is positively moved in one direction, said impact element moving in the opposite direction by the reaction of its spring upon its disengagement from said cam.

2. In a device of the character described, a tubular body, a longitudinal reciprocating piston in said tubular body, said piston comprising a tube, a hammer element secured in one end of the tube, and a mutilated spiral cam securedin the opposite end of said tube andhaving an axial bore, a spindle rotatable axially in "said tubular body butbeing held from en dwise movement therein, saidspindle 1 extending through the axial bore of said limited endwise and rotative gaging said spindle axially, and a combined anvil and tool holder element mounted in the adjacent end portion of said tubular body with limited endwisemovement "and being normally engaged by said hammer element.

3. In a device of the character described,

'artubular body, anYelementconstituting a combined anvil and tool holder mounted in one. end of said tubular body and having therein, a reciprocatory tubular piston in said tubular body, a hammer element secured in oneend of said piston tube and normally n contact with said tool-holder, said piston tube havingan internal mutilated spiral can at its opposite end provided with an axial bore, arotatable power spindle mounted axially in said tubular body'and extending through the axial bore in said spiral cam, a mutilated spiral cam on said power spindle movement anvil element.

Intestimony whereof I have signed my 5, In a device of the character described, i

a tubular-body, a reciprocatory piston in said tubular body, said piston having a hammer element'at one end, means for reciprocating said piston longitudinally in said tubular body, saidmeans including a cam device for moving it in one direction and a spring for movingit in the opposite direction, an anvil mounted in the end portion of said tubular body, said anvil'having 'a n axial tool receiv-V ing socket and being provided with a circunaferential groove, means for supporting said 7 anvil element with restricted longitudinal movement and at thesame time preventing rotation of saidanvil element, the same com-' prising a circular stop element having a slot in one side thereof whereby to straddle the intermediate portion of said anvil element,

means for detachably securing said stop ele- .Inentin said tubular body, and a segmentalblock fitted loosely in the slotted portion of said stop elementand being detachably secured to the intermediate portion of said name to thisspecification.

ELLIOTT E. ANTHONY.

in cooperative relation tofsaid canion said- 7 piston tube, a coil spring located insaid piston tube'with one end bearing on said ha'm- I mer element and its opposite end engaging the inner end'of said power spindle axially with respect thereto, and means for permitting longitudinal movement of said piston v tube andvat the same time holding it from rotation in said tubular body. 7

4. In adevice of the character end of said tubular body'having an axial bore, a power spindle mounted 'rotatably in the bore of said removable head but being held against endwise movement therein, a

combined anvil and tool holder element "mou'nted'in the'op'posite end of said tubular body and having restricted longitudinal movement, a pistoncomprisinga tube slidable longitudinallybut being nonrotative in said tubular body, a hammer element fitted in'one end of said piston tube in cooperative relation to said anvil element, a fixed axially bored spiral cam in the opposite end'of said piston tube, a cooperating spiral cam located insaid piston tube and being fixed'on the 7 inner end portion ofsaid'power spindle 5 Which is extended through the axial bore of hammer element, and its opposite ende'ngaging; the inner end ofjsa1d-power spindle I axially, I v

said first mentioned spiral cam, and an interposed spring element normally under comi pression with one end bearing against said i described, a tubular body, a removable head in one, 

